Constituted 2 March 1833 in the Regular Army as Company H, United States Regiment of Dragoons

Organized 2 March 1834 at Jefferson Barracks, Missouri

Redesignated 23 May 1836 as Company H, 1st Regiment of Dragoons

Redesignated 3 August 1861 as Company H, 1st Cavalry

(Cavalry companies officially designated as troops in 1883)

(1st Cavalry assigned in December 1917 to the 15th Cavalry Division; relieved in May 1918 from assignment to the 15th Cavalry Division; assigned 20 August 1921 to the 1st Cavalry Division; relieved 3 January 1933 from assignment to the 1st Cavalry Division)